CVE-2016-1000236: Cookie signature Cookie-signature Timing Attack Vulnerability
MODERATECVE-2016-1000236 is a MODERATE (CVSS 4.4) cookie-signature timing attack vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Cookie signature libraries in the npm ecosystem. The issue involves cookie-signature timing attack. Remediation is available by upgrading affected packages to version 1.0.4.
CVE-2016-1000236 at a Glance
Security Impact
CVSS: 4.4
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N).
How to Fix CVE-2016-1000236
To remediate this vulnerability, upgrade all affected Cookie signature dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install cookie-signature@1.0.4Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls cookie-signatureHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2016-1000236, inspect your project dependencies using npm:
npm ls cookie-signatureAnalyze the terminal output to locate any version of Cookie signature in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.4), your application is affected.
Note: The npm ls cookie-signature command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. In Cookie signature, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2016-1000236 Affected Cookie signature Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
cookie-signature
|
npm |
< 1.0.4
|
1.0.4
|
References
Frequently Asked Questions
What is CVE-2016-1000236?
Which Cookie signature versions are affected?
What version fixes CVE-2016-1000236?
Is cookie-signature affected?
What is the CVSS score of CVE-2016-1000236?
What CWE is associated with CVE-2016-1000236?
How can I check npm dependencies for CVE-2016-1000236?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-92vm-wfm5-mxvv",
"modified" : "2022-08-03T21:36:59Z",
"published" : "2020-01-06T18:44:10Z",
"aliases" : [ "CVE-2016-1000236" ],
"summary" : "cookie-signature Timing Attack",
"details" : "Affected versions of `cookie-signature` are vulnerable to timing attacks as a result of using a fail-early comparison instead of a constant-time comparison. \n\nTiming attacks remove the exponential increase in entropy gained from increased secret length, by providing per-character feedback on the correctness of a guess via miniscule timing differences.\n\nUnder favorable network conditions, an attacker can exploit this to guess the secret in no more than `charset*length` guesses, instead of `charset^length` guesses required were the timing attack not present. \n\n\n\n## Recommendation\n\nUpdate to 1.0.4 or later.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "cookie-signature"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.0.4"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-1000236"
}, {
"type" : "WEB",
"url" : "https://github.com/tj/node-cookie-signature/commit/2c4df6b6cee540f30876198cd0b5bebf28528c07"
}, {
"type" : "WEB",
"url" : "https://github.com/tj/node-cookie-signature/commit/39791081692e9e14aa62855369e1c7f80fbfd50e"
}, {
"type" : "WEB",
"url" : "https://github.com/tj/node-cookie-signature/commit/4cc5e21e7f59a4ea0b51cd5e9634772d48fab590"
}, {
"type" : "WEB",
"url" : "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838618"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1371409"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000236"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/tj/node-cookie-signature"
}, {
"type" : "WEB",
"url" : "https://security-tracker.debian.org/tracker/CVE-2016-1000236"
}, {
"type" : "WEB",
"url" : "https://travis-ci.com/nodejs/security-wg/builds/76423102"
}, {
"type" : "WEB",
"url" : "https://www.mail-archive.com/secure-testing-team@lists.alioth.debian.org/msg06583.html"
}, {
"type" : "WEB",
"url" : "https://www.npmjs.com/advisories/134"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-362" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2019-12-27T22:19:47Z",
"nvd_published_at" : null
}
}